| /** @file gio.c | |
| * @brief GIO Driver Inmplmentation File | |
| * @date 10.June.2010 | |
| * @version 1.01.000 | |
| * | |
| */ | |
| /* (c) Texas Instruments 2009-2010, All rights reserved. */ | |
| #include "gio.h" | |
| /** @fn void gioInit(void) | |
| * @brief Initializes the GIO Driver | |
| * | |
| * This function initializes the GIO module and set the GIO ports | |
| * to the inital values. | |
| */ | |
| void gioInit(void) | |
| { | |
| /** bring GIO module out of reset */ | |
| gioREG->GCR0 = 1; | |
| gioREG->INTENACLR = 0xFF; | |
| gioREG->LVLCLR = 0xFF; | |
| /** @b initalise @b Port @b A */ | |
| /** - Port A output values */ | |
| gioPORTA->DOUT = 0 /* Bit 0 */ | |
| | (0 << 1) /* Bit 1 */ | |
| | (0 << 2) /* Bit 2 */ | |
| | (0 << 3) /* Bit 3 */ | |
| | (0 << 4) /* Bit 4 */ | |
| | (0 << 5) /* Bit 5 */ | |
| | (0 << 6) /* Bit 6 */ | |
| | (0 << 7); /* Bit 7 */ | |
| /** - Port A direction */ | |
| gioPORTA->DIR = 1 /* Bit 0 */ | |
| | (1 << 1) /* Bit 1 */ | |
| | (0 << 2) /* Bit 2 */ | |
| | (0 << 3) /* Bit 3 */ | |
| | (0 << 4) /* Bit 4 */ | |
| | (0 << 5) /* Bit 5 */ | |
| | (0 << 6) /* Bit 6 */ | |
| | (0 << 7); /* Bit 7 */ | |
| /** - Port A open drain enable */ | |
| gioPORTA->PDR = 0 /* Bit 0 */ | |
| | (0 << 1) /* Bit 1 */ | |
| | (0 << 2) /* Bit 2 */ | |
| | (0 << 3) /* Bit 3 */ | |
| | (0 << 4) /* Bit 4 */ | |
| | (0 << 5) /* Bit 5 */ | |
| | (0 << 6) /* Bit 6 */ | |
| | (0 << 7); /* Bit 7 */ | |
| /** - Port A pullup / pulldown selection */ | |
| gioPORTA->PSL = 0 /* Bit 0 */ | |
| | (0 << 1) /* Bit 1 */ | |
| | (0 << 2) /* Bit 2 */ | |
| | (0 << 3) /* Bit 3 */ | |
| | (0 << 4) /* Bit 4 */ | |
| | (0 << 5) /* Bit 5 */ | |
| | (0 << 6) /* Bit 6 */ | |
| | (0 << 7); /* Bit 7 */ | |
| /** - Port A pullup / pulldown enable*/ | |
| gioPORTA->PULDIS = 0 /* Bit 0 */ | |
| | (0 << 1) /* Bit 1 */ | |
| | (0 << 2) /* Bit 2 */ | |
| | (0 << 3) /* Bit 3 */ | |
| | (0 << 4) /* Bit 4 */ | |
| | (0 << 5) /* Bit 5 */ | |
| | (0 << 6) /* Bit 6 */ | |
| | (0 << 7); /* Bit 7 */ | |
| /** @b initalise @b Port @b B */ | |
| /** - Port B output values */ | |
| gioPORTB->DOUT = 0 /* Bit 0 */ | |
| | (0 << 1) /* Bit 1 */ | |
| | (0 << 2) /* Bit 2 */ | |
| | (0 << 3) /* Bit 3 */ | |
| | (0 << 4) /* Bit 4 */ | |
| | (0 << 5) /* Bit 5 */ | |
| | (0 << 6) /* Bit 6 */ | |
| | (0 << 7); /* Bit 7 */ | |
| /** - Port B direction */ | |
| gioPORTB->DIR = 0 /* Bit 0 */ | |
| | (0 << 1) /* Bit 1 */ | |
| | (0 << 2) /* Bit 2 */ | |
| | (0 << 3) /* Bit 3 */ | |
| | (0 << 4) /* Bit 4 */ | |
| | (0 << 5) /* Bit 5 */ | |
| | (0 << 6) /* Bit 6 */ | |
| | (0 << 7); /* Bit 7 */ | |
| /** - Port B open drain enable */ | |
| gioPORTB->PDR = 0 /* Bit 0 */ | |
| | (0 << 1) /* Bit 1 */ | |
| | (0 << 2) /* Bit 2 */ | |
| | (0 << 3) /* Bit 3 */ | |
| | (0 << 4) /* Bit 4 */ | |
| | (0 << 5) /* Bit 5 */ | |
| | (0 << 6) /* Bit 6 */ | |
| | (0 << 7); /* Bit 7 */ | |
| /** - Port B pullup / pulldown selection */ | |
| gioPORTB->PSL = 0 /* Bit 0 */ | |
| | (0 << 1) /* Bit 1 */ | |
| | (0 << 2) /* Bit 2 */ | |
| | (0 << 3) /* Bit 3 */ | |
| | (0 << 4) /* Bit 4 */ | |
| | (0 << 5) /* Bit 5 */ | |
| | (0 << 6) /* Bit 6 */ | |
| | (0 << 7); /* Bit 7 */ | |
| /** - Port B pullup / pulldown enable*/ | |
| gioPORTB->PULDIS = 0 /* Bit 0 */ | |
| | (0 << 1) /* Bit 1 */ | |
| | (0 << 2) /* Bit 2 */ | |
| | (0 << 3) /* Bit 3 */ | |
| | (0 << 4) /* Bit 4 */ | |
| | (0 << 5) /* Bit 5 */ | |
| | (0 << 6) /* Bit 6 */ | |
| | (0 << 7); /* Bit 7 */ | |
| /** @b initalise @b interrupts */ | |
| /** - interrupt polarity */ | |
| gioREG->POL = 0 /* Bit 0 */ | |
| | (0 << 1) /* Bit 1 */ | |
| | (0 << 2) /* Bit 2 */ | |
| | (0 << 3) /* Bit 3 */ | |
| | (0 << 4) /* Bit 4 */ | |
| | (0 << 5) /* Bit 5 */ | |
| | (0 << 6) /* Bit 6 */ | |
| | (0 << 7); /* Bit 7 */ | |
| /** - interrupt level */ | |
| gioREG->LVLSET = 0 /* Bit 0 */ | |
| | (0 << 1) /* Bit 1 */ | |
| | (0 << 2) /* Bit 2 */ | |
| | (0 << 3) /* Bit 3 */ | |
| | (0 << 4) /* Bit 4 */ | |
| | (0 << 5) /* Bit 5 */ | |
| | (0 << 6) /* Bit 6 */ | |
| | (0 << 7); /* Bit 7 */ | |
| /** - clear all pending interrupts */ | |
| gioREG->FLG = 0xFF; | |
| /** - enable interrupts */ | |
| gioREG->INTENASET = 0 /* Bit 0 */ | |
| | (0 << 1) /* Bit 1 */ | |
| | (0 << 2) /* Bit 2 */ | |
| | (0 << 3) /* Bit 3 */ | |
| | (0 << 4) /* Bit 4 */ | |
| | (0 << 5) /* Bit 5 */ | |
| | (0 << 6) /* Bit 6 */ | |
| | (0 << 7); /* Bit 7 */ | |
| } | |
| /** @fn void gioSetDirection(gioPORT_t *port, unsigned dir) | |
| * @brief Set Port Direction | |
| * @param[in] port pointer to GIO port: | |
| * - gioPORTA: PortA pointer | |
| * - gioPORTB: PortB pointer | |
| * @param[in] dir value to write to DIR register | |
| * | |
| * Set the direction of GIO pins at runtime. | |
| */ | |
| void gioSetDirection(gioPORT_t *port, unsigned dir) | |
| { | |
| port->DIR = dir; | |
| } | |
| /** @fn void gioSetBit(gioPORT_t *port, unsigned bit, unsigned value) | |
| * @brief Write Bit | |
| * @param[in] port pointer to GIO port: | |
| * - gioPORTA: PortA pointer | |
| * - gioPORTB: PortB pointer | |
| * @param[in] bit number 0-7 that specifies the bit to be written to. | |
| * - 0: LSB | |
| * - 7: MSB | |
| * @param[in] value binrary value to write to bit | |
| * | |
| * Writes a value to the specified pin of the given GIO port | |
| */ | |
| void gioSetBit(gioPORT_t *port, unsigned bit, unsigned value) | |
| { | |
| if (value) | |
| { | |
| port->DSET = 1 << bit; | |
| } | |
| else | |
| { | |
| port->DCLR = 1 << bit; | |
| } | |
| } | |
| /** @fn void gioSetPort(gioPORT_t *port, unsigned value) | |
| * @brief Write Port Value | |
| * @param[in] port pointer to GIO port: | |
| * - gioPORTA: PortA pointer | |
| * - gioPORTB: PortB pointer | |
| * @param[in] value value to write to port | |
| * | |
| * Writes a value to all pin of a given GIO port | |
| */ | |
| void gioSetPort(gioPORT_t *port, unsigned value) | |
| { | |
| port->DOUT = value; | |
| } | |
| /** @fn unsigned gioGetBit(gioPORT_t *port, unsigned bit) | |
| * @brief Read Bit | |
| * @param[in] port pointer to GIO port: | |
| * - gioPORTA: PortA pointer | |
| * - gioPORTB: PortB pointer | |
| * @param[in] bit number 0-7 that specifies the bit to be written to. | |
| * - 0: LSB | |
| * - 7: MSB | |
| * | |
| * Reads a the current value from the specified pin of the given GIO port | |
| */ | |
| unsigned gioGetBit(gioPORT_t *port, unsigned bit) | |
| { | |
| return (port->DIN >> bit) & 1U; | |
| } | |
| /** @fn unsigned gioGetPort(gioPORT_t *port) | |
| * @brief Read Port Value | |
| * @param[in] port pointer to GIO port: | |
| * - gioPORTA: PortA pointer | |
| * - gioPORTB: PortB pointer | |
| * | |
| * Reads a the current value of a given GIO port | |
| */ | |
| unsigned gioGetPort(gioPORT_t *port) | |
| { | |
| return port->DIN; | |
| } | |
| /** @fn void gioEnableNotification(unsigned bit) | |
| * @brief Enable Interrupt | |
| * @param[in] bit interrupt pin to enable | |
| * - 0: LSB | |
| * - 7: MSB | |
| * | |
| * Enables an innterrupt pin of PortA | |
| */ | |
| void gioEnableNotification(unsigned bit) | |
| { | |
| gioREG->INTENASET = 1 << bit; | |
| } | |
| /** @fn void gioDisableNotification(unsigned bit) | |
| * @brief Disable Interrupt | |
| * @param[in] bit interrupt pin to enable | |
| * - 0: LSB | |
| * - 7: MSB | |
| * | |
| * Disables an innterrupt pin of PortA | |
| */ | |
| void gioDisableNotification(unsigned bit) | |
| { | |
| gioREG->INTENACLR = 1 << bit; | |
| } |